Polyphosphoric acid Chemical Properties
- Melting point:
- Boiling point:
- 550 °C
- 2.06 g/mL at 25 °C
- vapor pressure
- 2 hPa (20 °C)
- storage temp.
- Store below +30°C.
- Viscous Liquid
- Specific Gravity
- Water Solubility
- MAY DECOMPOSE
- Stable. Incompatible with strong bases. Hygroscopic.
- CAS DataBase Reference
- 8017-16-1(CAS DataBase Reference)
- EPA Substance Registry System
- Polyphosphoric acids (8017-16-1)
Polyphosphoric acid Usage And Synthesis
Superphosphoric acid is made by the concentration of regular wet-process acid up to P2O5 concentrations of 78%. Granular polyphosphates suitable for bulk blending are made by reacting ammonia with regular wet process acid of 52% P2O5 content and using the heat of reaction to drive off water to produce a phosphate melt of 10-43-0, with about 40% of the phosphorus in the polyphosphate form. These materials are, however, not suitable for bulk blending due to their “sticky” nature (10).
Viscous, water-white liquid. Water solu- ble. Does not crystallize on standing; hygroscopic. The commercial acid is a mixture of orthophos- phoric acid with pyrophosphoric, triphosphoric, and higher acids and is sold on the basis of its calcu- lated content of H3PO4, e.g., 115%. Superphospho- ric acid is a similar mixture sold at 105% H3PO4. These acids revert slowly to orthophosphoric acid on dilution with water.
Dehydrating, catalytic, and sequestering agents, for metal treating; many applications where a con- centrated monooxidizing acid is needed; laboratory reagent.
ChEBI: A polymerized phosphorus oxoacid of general formula HO[PO2OH]nH formed by condensation of orthophosphoric acid molecules and containing a backbone chain consisting of alternating P and O atoms covalent y bonded together.
Toxic by ingestion; strong irritant.
Polyphosphoric acid is obtained by heating the wetprocess phosphoric acid. It contains around 72% phosphorus (as P2O5) and represents a series of phosphoric acids containing more than one atom of phosphorus (such as H4P2O7). The general formula is Hn+2PnO3n+1.
Polyphosphoric acid Preparation Products And Raw materials
- Phosphorus pentoxide
- Aluminum chloride
- Ammonium alcohol polyvinyl phosphate
- Aluminum triphosphate
- Polyphosphoric acid
- Pentasodium triphosphate hexhydrate
- AMINO ACIDS
- sodium hexametaphosphate
- 2,4-PENTANEDIONE, SILVER DERIVATIVE
- Aluminum acetylacetonate
- METHYL ISOCYANOACETATE
- BENZYL ISOCYANIDE
- COBALT(II) ACETYLACETONATE
- Cupric acetylacetonate
- COBALT ETHYLENE DIAMINE CHLORIDE
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